108 (NORD-1 card)

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108 Register II, is a card that is used in the NORD-1 CPU.

Component side.
Solder side.

Introduction

The card is made in the standard NORD-1 card format. It is one fourth of the R, P, X and B registers combined with an adder. This is a central part of the ALU.

CPU model Crate position
29 C10, C14, C18, C22
35 C10, C14, C18, C22

The logic diagram is documented in drawing 2A08.[1]

Switches and indicators

There are no switches or indicators on this board.

BOM

This list contains the logic circuits used, passive components are not listed.

  • 5 x 7400
  • 3 x 7451
  • 8 x 7453
  • 8 x 7474
  • 2 x 7483

Reference

  1. HARDWARE MANUAL NORD 1